How soon after dosing do I test my water? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 01-28-2004, 12:44 AM Thread Starter
Algae Grower
PTrader: (1/100%)
Join Date: Jan 2004
Location: Dayton, Ohio
Posts: 85
I just began dosing today with KNO3, KCL, Fleets, and Flourish Iron. The tank has been "growing" for nearly six weeks now (2 weeks with current substrate). I have tested only the pH, GH, and KH since planting. Here are the water parameters (all have remained stable since day one)...

pH 6.8-7.0
KH 7
GH 5

Since dosing earlier today after receiving more test kits...
pH 7.2
KH 8
GH 6
fe .1
PO4 .01
NH3/NH4 0
NO2 - 0
NO3 - 1
(Fe, PO4, NH3, NH4, NO2, NO3, were all 0 yesterday)

I'm using Chuck's Planted Aquarium Calculator to figure dosing...except for the fleets. I dosed close to 5 hours ago and my NO3 and PO4 do not seem to be quite right. Should I wait until tomorrow and retest or is it possible that the plants have actually used up what I put in?

Any help would be appreciated. Thanks.


South Western Ohio Aquatic Plant Enthusiasts (SWOAPE) member
AGA member
matpat is offline  
Sponsored Links
post #2 of 3 (permalink) Old 01-28-2004, 12:51 AM
PT Biologist
SCMurphy's Avatar
PTrader: (4/100%)
Join Date: Oct 2003
Location: Maryland USA
Posts: 3,220
It depends on what you want to learn from your test. Do you want to know the levels that your dose creates? Wait until the tank is turned over twice by the filters based on their capacity.

Did you want to give the plants a chance to use some before you test, wait a day.

Do both and subtract to get a rough estimate of nutrient usage. Do this a few times and you will be conducting an experiment worthy of a science fair.


Aquascape? I'm a crypt farmer.

It's a fine line between fishing and standing on the shore looking like an idiot.

That IS an aquascape, it's titled "The Vacant Lot".
SCMurphy is offline  
post #3 of 3 (permalink) Old 01-28-2004, 01:04 AM Thread Starter
Algae Grower
PTrader: (1/100%)
Join Date: Jan 2004
Location: Dayton, Ohio
Posts: 85
Thanks for the input Sean. I was hoping to get the NO3 levels up to about 5ppm and the PO4 to 0.5ppm as a starting point. Seems like both are a bit low...but better than they were yesterday. I think I will try testing again tomorrow afternoon. If the results drop, should I dose again???


South Western Ohio Aquatic Plant Enthusiasts (SWOAPE) member
AGA member
matpat is offline  


Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
fish deaths and ich problems???? cvarcher Fish 18 05-18-2007 01:17 PM
Water Test Kits mitche8359 Equipment 15 03-02-2005 08:35 PM
Test Review Journal: Seachem FE, NO2 & NO3,Phosphate; Red Sea KH,GH,pH FiberCon Fertilizers and Water Parameters 9 06-17-2004 05:53 PM
How often do you test water? fedge Algae 7 06-11-2004 07:10 PM
ultrasonic foggers? Anonymous Riparium/Terrarium/Vivarium 44 06-08-2004 07:20 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome